What are insulation R-Values and how much do I need?


December 21, 2011

Recommended R-Values For BC And Greater Vancouver

R-Values Location Notes
40 Attic Roof Any uninsulated attic/roof assembly
20 Wall Any uninsulated exterior wall cavity.
28 Floor Over unheated, uninsulated space

Most building supply outlets do not have fiberglass blanket or batting solution available with R-Values higher than R38, which is inadequate for attic insulation in the Vancouver area. Affordable Quality Roofing always uses materials and processes that ensure your attic, roof, floors and walls are insulated beyond established R-Value ratings.

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